i just did a brake conversion on my 95 civic 4dr lx.i have to press the puddle twice to slow down..what brake master cylinder and proportion valve do i use? my proportion valve looks diferent from 92-9 civic ex with abs and some integras..need help asap

 

sounds like you need to just bleed your brakes more

 

okay will do

 

i havent had a chance to bleed the brakes but i know i have to press the brakes twice in order for them to work

 

Why would you muddle around and put off bleeding your brakes? This could quickly turn into a matter of life and death. Just go do it, it's practically free and only takes like 15 minutes.

 

I dont understand why you wouldnt put the right combination of parts on FIRST. You shouldnt be driving it if its doing this to you.

Prop valve: Think about it. Why would you be looking at a car's prop valve that is equipped with ABS if your's doesn't? You can use:

92-95 Civic Si and 93-97 Del Sol with rear disc, no abs (bolts directly to the firewall like stock
90-93 Integra (all lines will match up but will not bolt to firewall)

Master cylinder: 90-91 Civic Ex sedan 15/16" (bolts up completely without modding your stock lines)

any other combo will require you to get a different booster. That master cylinder, either of those 3 prop valves AND BLEEDING BEFORE YOU DRIVE will work out perfectly. Dont leave your driveway without them.

 

bleed the brakes

 

You can bleed the brakes all you want, but if you have the wrong prop valve and 13/16 MC on a rear disc the pedal is going to go to the floor unless you pump the pedal.

Good luck OP

 

Please dont provide incorrect information. With a rear disk swap NO NO NO master cylinder change is needed. Only time change is needed is if brakes are increased in SIZE. NO NO NO prop valve change is needed either. 95 civic si come with 3030 prop valve if you need proof.

 

And who are you? NONO NO do not post if you have the slightest clue of what you're talking about. Have you put on a rear disc and Integra front brakes in an EG and not change the MC? Oh excuse me for the 30/30 mistake on the Si prop valve but it can be used for the rear disc swap right so how is it incorrect? And does a rear caliper not INCREASE IN SIZE COMPARED TO A WHEEL CYLINDER? A big difference in fluid needed. Its not an increase in rotorsize that requires it unless of course the calipers have pistons much larger than stock or multiple pistons (ala NSX, Legend, and even 4pot calipers) You obviously didnt put that into logic. At the very least he should use a master cylinder the next size up from a 13/16 to keep a consistent pedal feel throughout (If he's using Integra front calipers, which he is?) Wow doesnt that need more fluid that a stock 13/16" cant provide?

Do you know what a prop valve does and why its needed? Regulates pressure to the rear to prevent rear lock up. Dont put the right one on and watch how you car brakes. The 30/30 and 40/40 sends pressure to the rear at a different rate than the 30/40 because the rears have BIGGER pistons (calipers) than a 30/40 equipped car (wheel cylinders, tiny pistons) There will be a mushy pedal. Put on Integra fronts and boom its even more amplified.

Since this thread is getting tiring with this nonsense, I will put up the link for those to view that want their brakes and the system to work hand and hand and not to run into any problems.

https://honda-tech.com/forums/honda-civic-del-sol-1992-2000-1/brake-swap-1036267/ heres one from a long time ago that directly applies to his situation starting at the 3rd post.

 

And to prove how dumb your bold, brave comments are, did YOU know what the prop valve number is on a rear drum Civic non Si? 30/40. Gee I wonder why they gave the Si a 30/30 rear disc prop valve and the other Civics with rear drums a 30/40. And what were you trying to prove? Something the guys who know these setups like myself something we already know? That an Si has rear discs and a different prop valve than the other drum Civics? And you logged on to act as some kind of savior with only a few posts? This poor guy wouldve gotten into an accident if he listened to you. And you couldnt even read the fact that he also has 96 spec front brakes too and those calipers' pistons are alot bigger than his Dx hence he needs a bigger MC? And the 96 spec uses a 1" MC as opposed to the stock 13/16"? If you didnt know, Im speaking for his whole brake setup and what he needs not what you assume from your own little world. Give us a break and read through all of the threads and posts about brake setups because youre ill-informed. Look all of this up and then keep what you find to yourself

Only if they are increased in size? Hmmm another dumb one. So companies like fastbrakes (Brian Hasty who knows me very well in fact we go bacl to his first couple of Honda big brake setups) who make big brake kits with caliper relocation brackets that require only the stock caliper needs a bigger MC as far as your info? Do that and youll have the hardest pedal in the world and you'd swear you have no vacuum assist at the booster but you wouldnt know that. and you'd blow the pressure relief rubber seal on the prop valve as well but you wouldnt know that. but at least you know the 95 Si (which isnt the only Si wait correction- 92-95 Si non abs- has a 30/30 prop valve.

Why does an Ex Civic have a bigger master cylinder? Why does the DC INtegras have an even bigger one? Surely I wouldnt come on here and help out this guy if i didnt know. But even dumber is how you come on here and try to cause a safety issue with a ricer comment like that. What are you going to tell him next; drive with bald tires because they look like slicks? Put 2 D series heads on a Acura V6? Youre done

 

I love how Allurian just STFU'd. Lol.

Jr., if I had gsr rear disks, a 40/40 valve is what I'd be looking for, correct?

 

Yes either the 93-97 Del Sol Si nonabs with rear disc, 90-93 Integra with rear disc, or 92-95 Civic Si. all of those will work for you.

Here is one of the oldest brake information sites. All but the 3030 prop valve info is true with pics. Remember this one was old school.
http://www.hybridautomotive.com/tech/5lug/